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Add open-drain GPIO support. (#15282)

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* Add open-drain GPIO support.

* `qmk format-c`

* Wording.

* Remove port GPIO implementations as the only board that uses it has its own internal defs anyway. Will wait for first-class handling of ports in core before reimplementing.
This commit is contained in:
Nick Brassel 2021-12-27 11:52:10 +11:00 • committed by GitHub
parent f491e6b138
commit 6e40dfa022
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4 changed files with 30 additions and 47 deletions
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17
platforms/avr/gpio.h
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@ -25,7 +25,9 @@ typedef uint8_t pin_t;
#define setPinInput(pin) (DDRx_ADDRESS(pin) &= ~_BV((pin)&0xF), PORTx_ADDRESS(pin) &= ~_BV((pin)&0xF))
#define setPinInputHigh(pin) (DDRx_ADDRESS(pin) &= ~_BV((pin)&0xF), PORTx_ADDRESS(pin) |= _BV((pin)&0xF))
#define setPinInputLow(pin) _Static_assert(0, "AVR processors cannot implement an input as pull low")
#define setPinOutput(pin) (DDRx_ADDRESS(pin) |= _BV((pin)&0xF))
#define setPinOutputPushPull(pin) (DDRx_ADDRESS(pin) |= _BV((pin)&0xF))
#define setPinOutputOpenDrain(pin) _Static_assert(0, "AVR platform does not implement an open-drain output")
#define setPinOutput(pin) setPinOutputPushPull(pin)
#define writePinHigh(pin) (PORTx_ADDRESS(pin) |= _BV((pin)&0xF))
#define writePinLow(pin) (PORTx_ADDRESS(pin) &= ~_BV((pin)&0xF))
@ -34,16 +36,3 @@ typedef uint8_t pin_t;
#define readPin(pin) ((bool)(PINx_ADDRESS(pin) & _BV((pin)&0xF)))
#define togglePin(pin) (PORTx_ADDRESS(pin) ^= _BV((pin)&0xF))
/* Operation of GPIO by port. */
typedef uint8_t port_data_t;
#define readPort(port) PINx_ADDRESS(port)
#define setPortBitInput(port, bit) (DDRx_ADDRESS(port) &= ~_BV((bit)&0xF), PORTx_ADDRESS(port) &= ~_BV((bit)&0xF))
#define setPortBitInputHigh(port, bit) (DDRx_ADDRESS(port) &= ~_BV((bit)&0xF), PORTx_ADDRESS(port) |= _BV((bit)&0xF))
#define setPortBitOutput(port, bit) (DDRx_ADDRESS(port) |= _BV((bit)&0xF))
#define writePortBitLow(port, bit) (PORTx_ADDRESS(port) &= ~_BV((bit)&0xF))
#define writePortBitHigh(port, bit) (PORTx_ADDRESS(port) |= _BV((bit)&0xF))